from django.contrib import admin, messages
from django.db.models import Q
from django.http import HttpResponse
import logging

from django.utils.safestring import mark_safe

from interview.models import Candidate
import csv
from datetime import datetime
from interview import candidate_fieldset as CF
from interview import dingtalk
from jobs.models import Resume

logger = logging.getLogger(__name__)
exportable_fields = ("username", "city", "phone", "bachelor_school", "master_school", "degree", "first_result",
                     "first_interviewer_user", "second_result", "second_interviewer_user", "hr_result", "hr_score",
                     "hr_remark",
                     "hr_interviewer_user")


def notify_interviewer(modeladmin, request, queryset):
    candidates = ""
    interviewers = ""
    for obj in queryset:
        candidates = obj.username + ";" + candidates
        interviewers = obj.first_interviewer_user.username + ";" + interviewers
    # dingtalk.send("候选人 %s 进入面试环节，亲爱的面试官，请准备好面试： %s" % (candidates, interviewers))
    messages.add_message(request, messages.INFO, '已经成功发送面试通知')


notify_interviewer.short_description = u'通知一面面试官'


def export_model_as_csv(modeladmin, request, queryset):
    response = HttpResponse(content_type='text/csv')
    field_list = exportable_fields
    response['Content-Disposition'] = 'attachemnt; filename=recruitment-candidates-list-%s.csv' % (
        datetime.now().strftime('%Y-%m-%d-%H-%M-%S'),
    )
    ### 写入表头
    writer = csv.writer(response)
    writer.writerow(
        [queryset.model._meta.get_field(f).verbose_name.title() for f in field_list]
    )

    for object in queryset:
        ### 单行的记录（各个字段的值）， 写入到csv文件
        csv_line_values = []
        for field in field_list:
            field_object = queryset.model._meta.get_field(field)
            field_value = field_object.value_from_object(object)
            csv_line_values.append(field_value)
        writer.writerow(csv_line_values)
    logger.info("%s exported %s candidate records" % (request.user, len(queryset)))
    return response


export_model_as_csv.short_description = u'导出CSV文件'
export_model_as_csv.allowed_permissions = ('export',)


# Register your models here.

class CandidateAdmin(admin.ModelAdmin):
    exclude = ('creator', 'created_date', 'modified_date')

    actions = [export_model_as_csv, notify_interviewer]

    def has_export_permission(self, request):
        opts = self.opts
        return request.user.has_perm('%s.%s' % (opts.app_label, "export"))

    list_display = (
        'username', 'city', 'bachelor_school', 'get_resume', 'first_score', 'first_result', 'first_interviewer_user',
        'second_result', 'second_interviewer_user', 'hr_score', 'hr_result', 'last_editor')

    # 筛选条件
    list_filter = (
        'city', 'first_result', 'second_result', 'hr_result', 'first_interviewer_user', 'second_interviewer_user',
        'hr_interviewer_user')

    search_fields = ("username", "phone", "email", "bachelor_school")

    ordering = ('hr_result', 'second_result', 'first_result')

    def get_resume(self, obj):
        if not obj.phone:
            return ""
        resumes = Resume.objects.filter(phone=obj.phone)
        if resumes and len(resumes) > 0:
            return mark_safe(u'<a href="/resume/%s" target="_blank">%s</a' % (resumes[0].id, "查看简历"))
        return ""

    get_resume.short_description = '查看简历'

    get_resume.allow_tags = True

    default_list_editable = ('first_interviewer_user', 'second_interviewer_user')

    # 列表处可编辑
    def get_list_editable(self, request):
        group_names = self.get_group_names(request.user)
        if request.user.is_superuser or 'hr' in group_names:
            return self.default_list_editable
        return ()

    # 父类方法重写
    def get_changelist_instance(self, request):
        self.list_editable = self.get_list_editable(request)
        return super(CandidateAdmin, self).get_changelist_instance(request)

    # 获取用户名字信息
    def get_group_names(self, user):
        group_names = []
        for g in user.groups.all():
            group_names.append(g.name)
        return group_names

    def get_queryset(self, request):
        qs = super(CandidateAdmin, self).get_queryset(request)

        group_names = self.get_group_names(request.user)
        if request.user.is_superuser or 'hr' in group_names:
            return qs
        return Candidate.objects.filter(
            Q(first_interviewer_user=request.user) | Q(second_interviewer_user=request.user)
        )

    # 表单字段编辑权限设置
    def get_readonly_fields(self, request, obj=None):
        group_names = self.get_group_names(request.user)

        if 'interviewer' in group_names:
            logger.info("interviewer is in user's group for %s" % request.user.username)
            return ('first_interviewer_user', 'second_interviewer_user')
        return ()

    def get_fieldsets(self, request, obj=None):
        group_names = self.get_group_names(request.user)

        if 'interviewer' in group_names and obj.first_interviewer_user == request.user:
            return CF.default_fieldsets_first
        if 'interviewer' in group_names and obj.second_interviewer_user == request.user:
            return CF.default_fieldsets_second
        return CF.default_fieldsets


admin.site.register(Candidate, CandidateAdmin)
